Model: S 15\r\n\r\nBluetooth version: Bluetooth V 5.0\r\n\r\nColor: Black\r\n\r\nBluetooth distance: 10 meters\r\n\r\nReception sensitivity: 95 dB\r\n\r\nLoudspeaker unit: 8 mm\r\n\r\nOhm impedance value: 32 ohms\r\n\r\nHeadphone Specifications\r\n\r\nControl method: tap\r\n\r\nHeadphone playback time: 4-6 H\r\n\r\nCharging time: 1-2 hours\r\n\r\nBattery capacity: 50 mAH\r\n\r\nDimensions: 13 * 13 * 15 mm\r\n\r\nWeight: 4.2 g / piece\r\n\r\nHeadphone battery output (W)\r\n\r\nCharging compartment specifications\r\n\r\nCapacity: 3500 mAh\r\n\r\nDimensions: 72 * 50 * 25 mm\r\n\r\nWeight of the charging compartment: 74.8 g\r\n\r\nVoltage: 3.7 V\r\n\r\nProduct box: 12 * 9.5 * 3 cm\r\n\r\nThe package includes:\r\n\r\nHeadset * 2\r\n\r\nCharging case * 1\r\n\r\nEarmuff * 3\r\n\r\nCharging cable * 1\r\n\r\nManual * 1\r\n\r\n1. Bluetooth headphones come with different sized L / M / S earmuffs and users can choose the appropriate headphones to wear according to their needs.\r\n\r\n2. It is not recommended to use headphones at high volume for a long time to maintain the best experience.\r\n\r\n3. 30 days return guarantee and 12-month failure warranty service, please rest assured to buy. If you have any questions, please write to us directly in the Buyer Center or support email.